/**
 * Copyright (C) 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.protoeditor.psi;

import com.intellij.lang.ASTNode;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public class ProtoFloatLiteral extends AbstractProtoElement implements ProtoLiteral {

  public ProtoFloatLiteral(ASTNode astNode) {
    super(astNode);
  }

  public double getFloatValue() {
    return Double.parseDouble(getText());
  }

  public Collection<? extends ProtoType> getPossibleTypes() {
    List<ProtoType> types = new ArrayList<ProtoType>();
    types.add(new ProtoPrimitiveType(ProtoPrimitive.FLOAT));
    types.add(new ProtoPrimitiveType(ProtoPrimitive.DOUBLE));
    try {
      long longVal = Long.parseLong(getText());
      types.add(new ProtoPrimitiveType(ProtoPrimitive.FIXED64));
      types.add(new ProtoPrimitiveType(ProtoPrimitive.INT64));
      if (longVal >= 0) {
        types.add(new ProtoPrimitiveType(ProtoPrimitive.UINT64));
      }
    } catch (NumberFormatException okay) {
    }
    try {
      Integer.parseInt(getText());
      types.add(new ProtoPrimitiveType(ProtoPrimitive.INT32));
      types.add(new ProtoPrimitiveType(ProtoPrimitive.FIXED32));
    } catch (NumberFormatException okay) {
    }
    return types;
  }
}
